Originally Posted by
jha07
Can you elaborate what the TC5 front arms and steering knuckles and TC4 rear arms and Yokomo hubs change? Does it have to do with roll center?
I am not sure myself, as I didn't measure the changes. I just copied what Randy and Rick revealed in pictures on redrc.
I guess the geometry changed (maybe not the rollcenter in first place) and gets closer to what Yokomo has.
My own experience before was that you can make the car very fast with stock parts, but it was never as smooth and consistent to drive. So after the change it is much better on the long run. Just more predictable, consistent and forgiving. And for us good but normal guys this can easily bring 1-2 seconds on a five minute run.